Upload symbols when uploading mojo binaries to the CDN.

DEPS

 # This file is automatically processed to create .DEPS.git which is the file
 # that gclient uses under git.
 #
 # See http://code.google.com/p/chromium/wiki/UsingGit
 #
 # To test manually, run:
 #   python tools/deps2git/deps2git.py -o .DEPS.git -w <gclientdir>
 # where <gcliendir> is the absolute path to the directory containing the
 # .gclient file (the parent of 'src').
 #
@@ skipping 134 matching lines @@
     Var('chromium_git') + '/external/github.com/dart-lang/source_span.git' + '@' + Var('source_span_dart_revision'),
 
   'src/third_party/dart-pkg/string_scanner':
     Var('chromium_git') + '/external/github.com/dart-lang/string_scanner.git' + '@' + Var('string_scanner_dart_revision'),
 
   'src/third_party/dart-pkg/vector_math':
     Var('chromium_git') + '/external/github.com/google/vector_math.dart.git' + '@' + Var('vector_math_dart_revision'),
 
   'src/third_party/dart-pkg/yaml':
     Var('chromium_git') + '/external/github.com/dart-lang/yaml.git' + '@' + Var('yaml_dart_revision'),
+
+  'src/third_party/pyelftools':
+    Var('chromium_git') + '/chromiumos/third_party/pyelftools.git' + '@' + '19b3e610c86fcadb837d252c794cb5e8008826ae',
 }
 
 deps_os = {
   'android': {
     'src/third_party/colorama/src':
      Var('chromium_git') + '/external/colorama.git' + '@' + '799604a1041e9b3bc5d2789ecbd7e8db2e18e6b8',
 
     'src/third_party/jsr-305/src':
         Var('chromium_git') + '/external/jsr-305.git' + '@' + '642c508235471f7220af6d5df2d3210e3bfc0919',
 
@@ skipping 249 matching lines @@
     'name': 'keyboard_native_resources',
     'pattern': '',
     'action': [ 'download_from_google_storage',
                 '--no_resume',
                 '--no_auth',
                 '--bucket', 'mojo/keyboard_native',
                 '-d', 'src/services/keyboard_native/res',
     ],
   },
 ]